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Oral Single-dose Toxicity Studies on Germanium-fortified Lettuce, in Mouse

게르마늄을 함유한 상추의 단일 경구투여 독성 검사

  • Kim, Jong-Jin (Dept. of Biological Science, Sunchon National University) ;
  • Choi, Ji-Na (Dept. of Biological Science, Sunchon National University) ;
  • Cho, Ju-Sik (Dept. of Bio-Environmental Science, College of Life Science and Natural Resources, Sunchon National University) ;
  • Heo, Jong-Soo (Division of Applied Life Science, Gyeongsang National University) ;
  • Yee, Sung-Tae (Dept. of Biological Science, Sunchon National University)
  • 김종진 (순천대학교 생명산업과학대학 생명과학부 생물학) ;
  • 최지나 (순천대학교 생명산업과학대학 생명과학부 생물학) ;
  • 조주식 (순천대학교 생명산업과학대학 생명과학부 생물환경학) ;
  • 허종수 (경상대학교 농생명학부) ;
  • 이성태 (순천대학교 생명산업과학대학 생명과학부 생물학)
  • Published : 2009.03.31

Abstract

Single-dose toxicity test of germanium-fortified lettuce was investigated in mice. Both sexes of C57BL/6 mice were orally administered once at a dose of 2,000 mg/kg. No death, clinical signs and pathological findings related to the treatment were observed. In addition, no significant changes in feed consumption and body weight gain were obtained during the treatment period, in spite of day-to-day fluctuation of water consumption. There were no considerable changes in hematology and serum biochemistry, except a significant decrease in GPT, GOT and LDH. Several alterations were observed in organ weight and blood biochemistry, including thymus, ovaries, heart, kidney and platelet in male or female mice. The ability of spleen cells proliferation was almost same level as shown in control group. However the population of B cells, helper T cells and cytotoxic T cells was not comparably changed in all groups. Taken together, it is suggested that single oral dose of germanium-fortified lettuce to C57BU6 mice did not cause apparent toxicological change at the dose of 2,000 mg/kg body weight.

유기게르마늄과 무기게르마늄을 첨가하여 양액 재배한 상추의 안전성을 평가하기 위하여 게르마늄 함유 상추의 생쥐(C57BL/6)에 대한 단회 경구 독성시험을 수행하였다. 실험전 기간 동안 사망한 실험동물은 없었으며, 일반증상과 임상증상도 관찰되지 않았고, 부검 결과 어떠한 육안적 병변도 관찰되지 않았다. 그리고 대조군과 시료 투여군 간의 체중 차이도 관찰되지 않았다. 암컷의 사료 소비량과 물 섭취량은 수컷에 비해 약간 적은 것으로 나타났다. 암컷의 경우에 대조군에 비해 각 실험군의 장기 무게가 모두 약간 감소하는 경우(흉선, 오른쪽 난소)와 악간 증가하는 경우(왼쪽 난소)가 있었고, 수컷의 경우에도 흉선, 심장, 오른쪽 신장, 왼쪽 부고환의 무게가 대조군에 비해 모든 실험군에서 약간 감소하였지만 유의한 차이는 아니었고, 왼쪽 신장과 좌우 고환의 무게가 약간 증가하였지만 역시 유의한 차이는 아니었다. 암수 간의 몸무게에 대한 상대적인 장기 무게의 차이는 모두 정상적인 범위내에 속하였다. 혈액 생화학적 검사 결과, 수컷의 경우에는 GPT와 GOT 측정값이 대조군에 비해 $Ge_{132}$를 함유한 상추를 먹인 실험군에서 유의적으로 감소하였고, LDH 측정값이 대조군에 비해 실험군에서 각각 유의적으로 감소하였다. 혈액학적 검사에서는 수컷의 혈소판(PLT) 수치가 대조군에 비해 각 실험군이 증가한 것으로 나타났지만 유의적인 변화는 아니었다. LPS와 Con A 자극에 대해 비장세포의 증식반응과, 비장세포 내 B세포, 보조 T세포, 세포독성 T세포의 비율은 유의한 파이가 없었다. 이상의 실험 결과로 $$GeO_2$Ge_{132}$ (60 mg/kg)출 함유한 상추 분말을 식약청 고시에 명시된 최고농도인 2,000 mg/kg을 단회 결구 투여하였을 때, 시료와 관련된 특기할만한 독성증상이 관찰되지 않았다.

Keywords

References

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